def sum(num1, num2, num3):
    return num1 + num2 + num3


# print(sum(123,456,789))
def max(A, B):

    if A == B:
        return A
    if A < B:
        return B
    if A > B:
        return A


def info(name='张晓梦', age=11, city='杭州'):
    print(f"你好啊{name}，来自{city}的{age}岁的小朋友")

print(max(12, 34))
print(max(4, 2))
print(max(2, 2))

info('zhang xiao meng', 10)
info('赵晨雨', 11, '洛阳')
info()
